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Oct 13, 2023 · A heart arrhythmia may feel like a fluttering, pounding or racing heartbeat. Some heart arrhythmias are harmless. Others may cause life-threatening symptoms. There are times when it is OK to have a fast or slow heartbeat. For example, the heart may beat faster with exercise or slow down during sleep.
Dec 15, 2023 · Causes. Tachycardia is an increased heart rate for any reason. If a fast heart rate is caused by exercise or stress, it's called sinus tachycardia. Sinus tachycardia is a symptom, not a condition. Most heart conditions can lead to different forms of tachycardia. Irregular heart rhythms, called arrhythmias, are one cause.
Mar 11, 2022 · If the heart beats rapidly, blood pressure can drop, causing the person to faint. This is more likely in those with a heart problem, such as congenital heart disease or certain valve problems. Cardiac arrest. Rarely, palpitations can be caused by life-threatening heartbeat problems and can cause the heart to stop beating effectively. Stroke.
May 6, 2011 · Answer: Sinus tachycardia is the term used to describe a faster-than-normal heartbeat — a rate of more than 100 beats per minute versus the typical normal of 60 to 70 beats per minute. Well over 99 percent of the time, sinus tachycardia is perfectly normal. The increased heart rate doesn't harm the heart and doesn't require medical treatment.
Apr 15, 2021 · Atrial fibrillation is the most common type of arrhythmia. It is a rapid heart rate caused by chaotic electrical impulses in the upper chambers of your heart. These signals result in rapid, uncoordinated, weak contractions. It is more common with age and for people who are obese or have been diagnosed with heart disease, diabetes or sleep apnea ...
Heart arrhythmias, also called heart rhythm problems, occur when the electrical impulses that coordinate your heartbeats don't work properly. This causes your heart to beat too fast, too slow or irregularly. Arrhythmias may feel like a fluttering or racing heart, and they may be harmless. However, some heart arrhythmias may cause bothersome ...
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Dec 7, 2021 · December 7, 2021. A heart arrhythmia is an irregular heartbeat. It occurs when the electrical signals that tell the heart when to beat and pump blood aren't functioning properly. Some heart arrhythmias can be harmless and just bothersome, while others can be life-threatening. In this Mayo Clinic Minute, learn more about the red flags to watch ...